Combined polyether, polyurethane foam and its preparation method and application of soundproof door
A technology of polyurethane foam and combined polyether, which is applied in the application field of combined polyether, polyurethane foam and its preparation and sound insulation doors, which can solve the problems of low sound absorption coefficient, achieve good adhesion, good sound insulation effect, and increase openings rate effect
Active Publication Date: 2019-05-03
SHANGHAI DONGDA POLYURETHANE
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a combination of polyether, polyurethane foam and its preparation method and the application of soundproof doors in order to overcome the defect of low sound absorption coefficient of polyurethane foam in the prior art.
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1-3 and comparative example 1
[0049] The parts by weight of the components combining polyether and isocyanate in Examples 1-3 are specifically shown in Table 1.
[0050] Table 1
[0051]
[0052]
[0053] (1) Preparation of combined polyether
[0054] Mix other components except isocyanate in a stainless steel mixing kettle for 45 minutes, and stir evenly.
[0055] (2) Preparation of polyurethane foam
[0056] Polyurethane foam can be prepared by mixing and reacting the combined polyether and isocyanate in proportion at 22°C.
Embodiment 4
[0058] The polyurethane foam prepared in Examples 1-3 is directly injected into the door body to obtain a soundproof door filled with the polyurethane foam of the present invention.
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Abstract
The invention discloses a premixed polyether, and a polyurethane foam, a preparation method thereof and an application thereof in a sound insulation door. The premixed polyether comprises polyether polyol A, polyether polyol B, a silicone foam stabilizer, a catalyst, water and triethyl phosphate, and is characterized in that the silicone foam stabilizer is B-8523 silicone foam stabilizer produced by Evonik Degussa Specialty Chemicals (Shanghai) Co., Ltd. The polyurethane foam manufactured from the premixed polyether significantly improves a sound absorption coefficient, prepares the sound insulation door which can achieve good sound insulation effects, and thereby achieves the purpose of reducing noise pollution.
Description
technical field [0001] The invention relates to a combination of polyether and polyurethane foam, a preparation method thereof and the application of a soundproof door. Background technique [0002] Noise is a source of pollution, and the accelerated pace of urbanization inevitably aggravates the degree of noise pollution. The role of the soundproof door is also highlighted. The soundproof door is suitable for places with high noise requirements, such as recording studios for broadcasting studios, studios, control room broadcasts, movies, television and audio products. With the improvement of people's quality of life, developers pay more and more attention to the sound insulation effect of the wall during the building construction process at this stage, but in the later stage, the owners will inevitably put forward higher requirements for the sound insulation effect of the house during the renovation process. Traditional wooden doors are mostly made of composite boards or i...
Claims
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IPC IPC(8): C08G18/48C08J9/08C08G101/00
CPCC08G18/4804C08G2350/00C08G2110/0083
Inventor 李明王青林许景龙陈勤
Owner SHANGHAI DONGDA POLYURETHANE